Structural frame integrated with variable-vectoring flow control for use in turbine systems

Abstract

The present disclosure provides systems and apparatuses for use in turbine systems that integrate structural frame elements into a variable-vectoring flow control configuration in order to reduce the weight and length of such turbine systems. In one exemplary embodiment, an apparatus for directing a gas flow includes an annular outer structural casing, an annular central hub disposed within the outer structural casing, and a plurality of structural support elements extending radially between the central hub and the outer structural casing. The apparatus further includes a plurality of positionally-fixed, variable-vectoring flow control bodies extending radially between the central hub and the outer structural casing and positioned circumferentially along the central hub between ones of the plurality of structural support elements.

Description

TECHNICAL FIELD[0001]Embodiments of the subject matter described herein relate generally to systems and apparatuses for use in turbine systems, such as gas turbine engines, turbochargers, compressors, fan assemblies, generators, auxiliary power units, and the like. More particularly, embodiments of the subject matter relate to such systems and apparatuses that employ a structural frame integrated with variable-vectoring flow control.BACKGROUND[0002]Gas turbine engines, as well as other turbine systems such as turbochargers, compressors, fan assemblies, generators, auxiliary power units, and the like, typically include a gas compression section feeding a combustion chamber that produces hot gases to drive the turbine stages downstream. The engine compression section typically includes a plurality of moving bladed disks, separated by successive stages of stator vanes that redirect the gas flow.[0003]While some conventional stator vanes are fixed in orientation (that is, they are only ...

AI Technical Summary

Benefits of technology

This configuration reduces pressure drop and enhances the efficiency of the compressor section, resulting in a more compact and efficient turbine system with improved performance and operational life expectancy.

Problems solved by technology

This configuration adds length and weight to the engine, but is required because of the space necessary to implement the synchronization bars, control shaft, rings, axial levers, and pitch control rods of the variable-pitch mechanism.

Since the struts do not move, the airflow out of this “combined” system would be very non-uniform—turning where the variable pitch vanes are and not turning where the struts are.

This causes detrimental aerodynamic and mechanical responses from the downstream rotor.

The prior art lacks any disclosure of attempts to reduce the length and weight of a turbine engine by incorporating structural frame elements into the more recent fluidic control or plasma control configurations that do not require as much space claim as the conventional variable-pitch configurations.

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